Threshing-machine cylinder



No. 6l3 ,654.

J. A. ANDERSON.

THBESHING MACHINE CYLINDER.

[Application filed. Nov. 11, 1897.)

(No Model.)

Patented Nov. 8, I898.

UNITED STATES JOHN ALFRED ANDERSON, OF SIOUX CITY, IOWA.

THRESHlNG-MACHINE CYLINDER.

SPECIFICATION forming part of Letters Patent No. 613,654, dated November8, 1898.

Application filed November 11, 1897. Serial No. 658,145. (No model.)

required for the proper operation of the cylinder.

A further object that I have in view is to provide a construction bywhich the parts may be assembled readily together and in a manner tobrace and reinforce the longitudinal bars or lags of the cylinder.

To the accomplishment of these ends my invention consists in a cylindercomprising the heads, a series of lags or bars, and weighted rims unitedto the heads and upon the lags or bars to serve as balance-wheels bywhich the cylinder may be caused to rotate steadily with a smallerexpenditure of power than is required with a cylinder of ordinaryconstruction; and the invention further consists in the peculiarconstruction and arrangement of parts which will be hereinafter fullydescribed and claimed.

To enable others to understand my invention, I have illustrated the samein the accompanying drawings, forming a part of this Specification, andin which Figure 1 is a perspective View of a threshing-m'a'cliinecylinder embodying my invention. Fig. 2 is a vertical longitudinalsectional view thereof. Fig. 3 is an end elevation of the cylinder; andFig. 4 is an enlarged detail sectional view through the balance-rim, ahead, two of the bars or lags, and the securing-bolts.

Likenumerals of reference denote corresponding parts in all the figuresof the drawings.

In the preferred embodiment of the invention illustrated by the drawingsthe cylinder consists of a shaft 1, the heads 2 2, a series of annularrings 3, arranged between the heads, a series of bars or lags 4, and thebalancerims 5. I construct these balance rims of heavy cast metal andprovide a plurality of bolts 6, by which the balance-rims are securedrigidly to the heads of the cylinder in order to unite the parts solidlytogether and to insure rotation of the rims with the cylinder in amanner to secure uniformity in the running of the cylinder and areduction in the power required for its operation.

The heads 2 are fastened to the shaft 1 in any suitable or appropriatemanner, and in the peripheral edge of each head is formed a series ofnotches 7, which extend transversely across the head and which formseats in which are fitted the ends of the bars or lags 4. Thecounterbalance-rims 5 are arranged to fit snugly to the ends of the barsor lags where the latter are seated in the notches of the heads, and therims are thus seated upon the bars or lags to assist in holding thelatter securely in place in their seats in the heads. I prefer toconstruct the heads in the skeleton form shown by Fig. 3 of thedrawings. In this embodiment of the invention the head is in the form ofa spoke-wheel, with a hub and rim anda series of substantially radialspokes arranged to provide openings between the spokes. Thisconstruction of each head in skeleton form, as shown, provides for theattachment of the radial bolts 6. I arrange the bolts at suitableintervals around the periphery of the cylinder, and each bolt 6 passesthrough alined openings provided in the balance-rim, one of the lags orbars, and the periphery of the skeleton-like head. Each bolt has itshead countersunk inthe periphery of the balance-rim, and the threadedend of the bolt projects into the head to lie between the spokes, a nut6 being screwed on said inner threaded end of the bolt to find a seatagainst the periphery of the head.

The rings 3 of the cylinder are shown as arranged exteriorly to the lagsor bars 4 and at suitable intervals from each other, and through therings and the bars at the points where they lap are passed the shanks ofthe teeth. These teeth may be of any suitable construction, and they arefastened to the cylinder, so as to be held rigidly in place thereon.

I attach especial importance to the em ployment of the heavy weightedrims at the ends of the cylinder, because such arrangement of theweighted rims wholly avoids interference with the proper operation ofthe toothed working surface of the cylinder. The weighted rims serve thepurpose of fly or balance wheels to insure steadiness and uniformity tothe rotation of the cylinder. A cylinder constructed in accordance withmy invention does not require the expenditure of so great an amount ofpower for the operation of the cylinder, because the weighted rimsimpart momentum to the cylinder when it is in motion.

"While I prefer to employ the weighted rims as an integral part of thecylinder structure and to assist in holding the lags or bars in positionon the notched heads of the cylinder, I am aware that the object of myinvention may be attained in part by the provision of balance-rims onthe cylinder-shaft, outside of the heads of the cylinder, and I wouldhave it understood that such arrangement is con templated by myinvention.

It is evident that changes in the form and proportion of parts and inthe details of construction may be made without departing from thespirit or sacrificing the advantages of the invention. I thereforereserve the right to make such modifications as fairly fall within thescope of the invention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. A threshing-cylinder comprising a shaft,

the heads, a series of longitudinal bars at tached to said heads andprovided with radial teeth, the heavy balance-rims fitted to the ends ofthe bars and seated circumferentially upon the heads, each balance-rimbeing of enlarged cross-sectional area and extending outwardly from thebars in planes parallel to the teeth, and bolts which clamp thebalance-rims to the bars and the heads, whereby the balance rims aredisposed compactly to the heads and insure steadiness and prolongedrotation to the cylinder with a reduced expenditure of power,substantially as described.

2. A threshing-cylinder comprising a shaft, the heads each provided withtransverse notches in its circumference and with the radial openingswhich open into said notches, the toothed bars seated at their ends insaid notches of the heads, the heavy balance-rims fittedcircumferentially on the heads and the bars and extending outwardly inthe planes of the heads parallel to the teeth, and the bolts which passthrough the balance-rims, the bars, and the openings in the heads,substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

JOHN ALFRED ANDERSON.

Vitnesses:

A. I. ANDERSON, T. (3. PRESCOTT.

